A Study to Determine the Biodistribution, Safety, and Tolerability of a Microdose of Radiolabeled BIIB080 Co-administered With BIIB080 in Healthy Adults

NCT ID: NCT06454721

Last Updated: 2025-10-10

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: PHASE1
• Total Enrollment: 5 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-01-30
• Study Completion Date: 2026-07-30

Brief Summary

In this study, researchers will learn more about a study drug called BIIB080. BIIB080 is currently a drug under investigation for treatment of Alzheimer's disease. The main question researchers are trying to answer in this study is how radiolabeled BIIB080 distributes in the brain and spinal cord. To help answer this question, researchers will use positron emission tomography (PET) scanner that can detect radiolabeled BIIB080 after a single injection of a small dose of radiolabeled BIIB080 ([89Zr]Zr-DFO-BIIB080) and a dose of BIIB080 together via an intrathecal (IT) injection in healthy volunteers. Researchers will also learn about the safety of injecting radiolabeled BIIB080 and BIIB080 together.

Conditions

Healthy Volunteer

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

[89Zr]Zr-DFO-BIIB080 + BIIB080

Participants will receive a single injection of a small dose of radiolabeled BIIB080 (\[89Zr\]Zr-DFO-BIIB080) along with a dose of BIIB080 together via an intrathecal (IT) injection.

Group Type: EXPERIMENTAL

[89Zr]Zr-DFO-BIIB080

Intervention Type: DRUG

Administered as specified in the treatment arm.

BIIB080

Intervention Type: DRUG

Administered as specified in the treatment arm.

Interventions

[89Zr]Zr-DFO-BIIB080

Administered as specified in the treatment arm.

Intervention Type: DRUG

BIIB080

Administered as specified in the treatment arm.

Intervention Type: DRUG

Other Intervention Names

ISIS 814907

Eligibility Criteria

Inclusion Criteria

• Must be healthy adult and have a body mass index (BMI) 18 through 30 kilograms per square meter (kg/m^2).
• Males must practice highly effective contraception and females must be of no childbearing potential.

Exclusion Criteria

• Conditions that influence cerebrospinal fluid (CSF) kinetics e.g., significant scoliosis or a physical disability that limits mobility.
• Contraindication to:
• Magnetic resonance imaging (MRI) scan: e.g., indwelling ferrous metal, implanted medical devices, or claustrophobia.
• Radiation/PET scan: e.g., inability to lie flat or still for the duration of the scan) or intolerance to previous nuclear medicine scans.
• Lumbar Puncture (LP, spinal tap): e.g., current use of a medication that prolongs coagulation times, including aspirin, known disorders of the coagulation cascade, platelet function, or platelet count, low white blood cell counts, chronic low back pain; prior lumbar spine surgery, anatomical factors at or near the spinal tap site, clinical signs of raised intracranial pressure (e.g., headache, or focal neurologic signs).
• Findings from the screening MRI that may interfere with participant safety or the scientific integrity of the study e.g., Chiari malformation, high grade spinal stenosis, hydrocephalus, or neural tube defect.
• Abnormal Laboratory Values e.g., liver functions, anemia, abnormal blood coagulation profile.
• Cardiac, endocrinologic, hematologic, hepatic, immunologic, metabolic, urologic, pulmonary, neurologic, dermatologic, psychiatric, renal, or malignant disease.
• Severe allergic or anaphylactic reactions/ systemic hypersensitivity to BIIB080 or any component of the study treatment.
• Alcohol or substance abuse.
• Plans to undergo elective procedures or surgeries during the study.
• Enrollment in any other drug, biologic, device, or clinical study within 30 days or 5 half-lives, whichever is longer, prior to Check-in.
• Use of any prescription medication (except hormone therapy), over-the-counter medication (excluding acetaminophen), or dietary and herbal supplements (e.g., St. John's wort) within 28 days of the of dosing and during the study.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Biogen

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Medical Director

Role: STUDY_DIRECTOR

Biogen

Locations

UC Davis

Sacramento, California, United States

Countries

United States

Other Identifiers

247HV101

Identifier Type: -

Identifier Source: org_study_id